Condensing-coil.



nu. 694,797.. Y Patented Mar. 4, 1902,

A. slasnr.

CUNDENSMGCVOIL.

(Application med Tuna 3; 1901.)

(No Model.) 2 Sheets-Sheet 2.

Ass

IINITED STATES PATENT union.

ALFRED SIEBERT, OF ST. LOUIS, MISSOURI.

GONDENSING-COIL.

SPECIFIOATON forming part of Letters Patent No. 694,797, dated March 4, 1902.

Application led J une 3, 190].,

reference being had tothe accompanying drawings, forming part of this specification;

My invention relates to that class of appa-- ratus used in connectionfwith refrigeratng machinery for reducing the gas used in such machinery to a liquefied Vstate after it has been passed through the machinery in service -as a refrigerant.

The invention consists in features of novelty hereinafter fully described, and pointed out in the claims.

Figure I is a verticall sectional view taken centrally through a condensin g-coil constructv ed according to my improvement. Fig. II is a view, partly in end elevation and partly in vertical section, taken on line II II, Fig. I. Fig. III is atop or plan view ot one end ofthe coil. Fig. IV is a view, partly in section and partly in elevation, illustrating a sectional construction of the coil. Fig..V is a vertical cross-sectional view taken through the sectional construction illustratedin Fig. IV. Fig. VI is a horizontal sectional View, taken on lineVI VI, Fig. V. Fig. VII is a view similar to Fig. V, showing a modification. Fig. VIII is a horizontal sectional view taken on line VIII VIII, Fig. VII.

The characteristic feature of novelty in 1n yH present improvement consistsin the application of caps that inclose the return-bends of the gas-circulation pipes and provide for the application of water circulation around said return-bends to subject the gas passing therethrough to the cooling action of the Waterin addition to its being subjected to such cooling action as it passes through the pipes intermediate of the return-bends. The construction whereby I obtain the desired circulation of water, as stated, will now be set forth in detail.

l designates a pair'ot' heads-that are joined by tie-rods 2', which pass therethrough and are provided with nuts 3 and 4t. The heads 1 are recessed and provided with apertures 5 Serial No. 62,896. (N modele) at intervals, and mounted in the recesses in said heads are water-conducting pipes 6, surrounded by stufting-box glands 7, that are seated in the recesses against suit-able packing 8. i

9.designates gas-con ducting pipes mounted within the water-conducting pipes 6 and having their ends projected through the apertures in the heads l and centrally supported in said pipes by lugs 10, that project into the apertures 5. These lugs 10 also prevent the ends of 1the water-conducting pipes passing entirely throughthe apertures 5 of the heads. The ends of the gas-conducting pipes 9 are united by retu r11-ben ds l1, through which the gas passes to communicate into the succeeding pipe-sections.

12 designates caps seated at the ends of the coil and tted to the outer faces of the heads l, to which they .are secured by bolts I3. Each ot the caps i2 is provided with a series of partitions it, by which the caps are divided into compartments 15, that contain the return-bends ll of the gas-conducting pipes 9 and have communication with the Waterconducting pipes 6 through the apertures 5 in the heads l. It will therefore be seen that the water flowing through the pipes 6 is free to circulate through the apertures 5 into the compartments 15 and therefrom into the next succeeding water-conducting pipe to the 0pposite end of the condensing-coil and into the compartment l5,to which said succeeding pipe leads.

16 designatesthe water-inlet pipe that is connected to one of the caps 12 and enters a compartment 17, that has communication with the first of the series ot water-conducting pipes 6. The last of the series of Waterconducting pipes communicates into a compartment 18 in the cap 12, referred to, and connected to said cap at the location of the compartment l 8 is an outlet-pipe 1 9. The uppermost gas-conveying pipe 9 has connected toit a gas-inlet pipe 20, and the lowermost pipe 9 has connected to it an outlet-pipe 2l, through which the liquefied gas is conducted from the coil. l

22 designates a plug that closes an aperture in one of the caps 12, upon the removal of which plug opportunity is afforded for the detection of leakage of gas Within the condensing-coil, such detection being rendered possible by the escape of gas orders through said aperture when the plug is removed.

It is obvious that with the construction of condensing-coil herein described the cooling action of the Water upon the gas conducted through the coil is greatly enhanced and the gas much more rapidly liquefied by reason of the return-bends of the gas-conducting pipes being inclosed Within compartments through which the water circulates, so that the gas is subjected to the cooling action of the Water while passing through said return-bends in addition to its being subjected to the cooling action of the Water while passing through the pipe-sections of the coil only, as is the casein condensing-coils in which the return-bends of the gas-conducting pipes are not subjected to circulation of water thereabout.

In Figs. IV to VIII, inclusive, I have shown constructions whereby the condensing-'coil may be built up in sections, thus providing an apparatus of knockdown form and one that is more convenient with respect to handling, shipment, and setting up, as the sections may be put together at the place of manufacture and shipped. ready for setting up, thereby requiring simply assemblage of the sections to be in condition for use.

In the construction shown in Figs. IV, V, and VI the end caps of the coils are cornposed of sections l2, havingopposing flanges, that are joined by bolts 23 and contain the compartments l5, which receive the returnbends ll of the gas conducting pipes 9a.

The compartment 15a, located at the junction of the cap-sections l2, is enlarged, as seen in Fig. V, to provide sufficient space in the use of a sectional return-bend 1lb.

In Figs. VII and VIII, I have shown the compartment-caps l2b of sectional form, but containing compartments 15b of uniform size f to receive the gas-conducting pipe returnbends 11c Where such return-bends are made of uniform size and the section return-bend shown in Figs. IV, V, and VI is dispensed With.

I have described the coil herein set forth for use as a condensing-coil, but wish it understood that I do not limit myself to its use for this specific purpose, as it is obvious that it might be used as a cooling-coil for cooling liquids. Neither do I limit myself to the passage of the gas or liquid through the inner pipes of the coil and the cooling agent through the outer pipes, inasmuch as it is evident that the gas or liquid to be cooled might be Without departing from my invention conducted through the outer pipes of the coil and the cooling agent be conducted through the inner pipes.

I claim as my inventionl. In a coil of the class described, the conibination of a pair of apertured heads, a series of outer conducting-pipes secured Within the apertures of said heads, caps fitted to said heads through which said outer pipes communicate, a series of inner conducting-pipes located Within said outer conducting-pipes, return-bends connecting the ends of said inner conducting-pipes, and means mounted Within the apertures of the heads preventing the passage of the outer pipes and supporting the inner pipes.

2. In a coil of the class described, the combination of a pair of apertured heads, a series of outer conducting-pipes, secured in the apertures of the heads, caps fitted to said heads and provided with compartments into which said outer pipes communicate, a series of inner conducting-pipes located Within said outer pipes, return-bends connecting the ends of said inner conducting-pipes and located in the compartments of s aid caps, and lugs mounted Within the apertures of the heads preventing the passage of the outer pipes and supporting the inner pipes.

ALFRED SIEBERT.

In presence of- E. S. KNIGHT, M. P. SMITH. 

